Michael McDonnell has climbed Mount Kilimanjaro. He has a physics degree. He’s worked in hazardous environments. His hope is that these qualifications will convince a selection committee that he’s the perfect candidate for the first human voyage to Mars. So…

NASA's intrepid Mars rover, Curiosity has been through a lot in the past year. It flew 354 million miles, blasted through the Mars atmosphere, deployed a supersonic parachute, unfurled a giant sky crane and touched down gently on…

A spacecraft designed to search for life on Mars completed its nearly 10-month, 422-million-mile voyage Sunday, touching down the Red Planet and transmitting intriguing images from its northern arctic plains.

NASA's robotic rover, fully recovered from computer problems that plagued it for more than two weeks, drilled into a Martian rock over the weekend in search of evidence that water once flowed on the arid planet.